Chapter 3 Hardware Overview
ES3500 Series User’s Guide
30
3.1.1 Console Port
For local management, you can use a computer with terminal emulation software configured to the
following parameters:
• VT100
• Terminal emulation
• 9600 bps
• No parity, 8 data bits, 1 stop bit
• No flow control
Connect the male 9-pin end of the console cable to the console port of the Switch. Connect the
female end to a serial port (COM1, COM2 or other COM port) of your computer.
3.1.2 Ethernet Ports
The Switch has 10/100 Mbps auto-negotiating, auto-crossover Ethernet ports. In 10/100 Mbps Fast
Ethernet, the speed can be 10 Mbps or 100 Mbps and the duplex mode can be half duplex or full
duplex.
An auto-negotiating port can detect and adjust to the optimum Ethernet speed (10/100 Mbps) and
duplex mode (full duplex or half duplex) of the connected device.
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover
Ethernet cable.
The Switch has several dual-personality interfaces, (see
), each of which consists of an RJ-45 Ethernet port and SFP slot pair. The Switch activates one
connection of each RJ-45 and SFP slot pair. The SFP slots have priority over the RJ-45 ports. This
means that if an RJ-45 port and the corresponding SFP slot are connected at the same time, the RJ-
45 port will be disabled.
When auto-negotiation is turned on, a Ethernet port negotiates with the peer automatically to
determine the connection speed and duplex mode. If the peer Ethernet port does not support auto-
negotiation or turns off this feature, the Switch determines the connection speed by detecting the
signal on the cable and using half duplex mode. When the Switch’s auto-negotiation is turned off,
an Ethernet port uses the pre-configured speed and duplex mode when making a connection, thus
requiring you to make sure that the settings of the peer Ethernet port are the same in order to
connect.
3.1.2.1 Default Ethernet Negotiation Settings
The factory default negotiation settings for the Gigabit ports on the Switch are:
• Speed: Auto
• Duplex: Auto
• Flow control: Off
• Link Aggregation: Disabled
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